Incandescent gas-lamp.



. vm. 705,8ls. Patented July 29, |902.

F. m. minous.

INGANDESCENT GAS LAMP.

(Application led Oct; 4, 1901.)

(lo Modal.)

UNITED STATES FRANK M. BROOKS, OF BROOKLYN, NEY YORK.

-PATENT OFFICE.

INCANDESCENT GAS-LAM P.

SPECIFICATION forming part of Letters Patent No. 705,818, dated J' uly 29, 1902.

Appination filed October 4, 1901. l serial No. 77,512. (No moda.)

.To a/ZZ whom, it may concern:

Be itknown that L-FRNK M. BRooKs,a citi`v zen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, (having my post-office address at No. 35 Warren street, New York, N.Y.,) have invented certain newA and useful Improvements in Incandescent Gas-Lamps, of which the following is a specification.

The mantles used on this class of gas-lamps are, as is well known, exceedingly fragile. The slightest blow or jar is liable to fracture them. Heretofore a frequent cause forthe breaking of the mantles has` been applying and removing the globe of the lamp for the purpose of cleaning or otherwise and also the movement of the chains or equivalent devices which operate the stop-cock to turn the gas on and off.

My improvements therefore consist in locating the devices which support the globe belowthe burners and so constructing them that the connection between the globe-holder and the gallery` or support whereby it is held to the lamp may be easily, fquickly, and smoothly made without'any nicety of adjustment and without jar, such as has been nec ers the movement of the vcross-bar whichV actuates the cock and the inevitablemovement of the chains are apt to fracture the mantles. Furthermore, the chains, the stop-cock, the barrel for the stop-cock, and the other'parts when located above the burners or adjacent to them are apt to get very Vmuch heated, whereby they contract and expand in such manner as tojam or fail to move smoothly,`

whereupon the operatorie very apt to jerk upon the chains with more or less violence, and this also is exceedingly apt tofracture the mantles. t

Referring now to the drawings, Figure 1 illustrates a vertical sectional view of the casting.

the gas is supplied.

apparatus,the burner, mantles, rbc., being mostly shown in elevation. Fig. 2 is a view from beneath of the burner, globe-holder, dac. Fig. 3 is a detail of the stop-cock and burner- A represents the pipe by which the burner as a whole is suspended and through which It is threaded or otherwise connected to the upper end B of the gaschamber C, from which extend laterally the burner-supply tubes D, which connect with the burners E, (see Fig. 1,) upon which are mounted the mantles F in the usual manner. Any other suitable support may be substito the burner in suclrmanner as preferred. The gas-chamber O is practically divided into two chambers by a diaphragm G, threaded centrally, in which is screwed a pipe H, which ,is threaded at its lower end to the gas-cock l. This cock has a cup-shaped part at its upper end, which is threaded, as shown, and to which the lower end of the gas-chamber C is connected by means of the threaded part L. The gallery or supportM for the globe is clamped between the upper edge of the gascock, as at K, and a shoulder formed on the gas-chamber C, as shown. The gallery has holes or perforations N in its lower part or bottom for the purposes of draft. The cock of the burner is provided with a lateral port O, which engages with a longitudinal port P, from which in turn extend other ports Q Q, which engage with passages R in the barrel of the cock which communicate with the chamber.

S is the globe, and it has a angeT at its lower end which rests in a cup-shaped globe- Fig. 4 is a detail of the cock separated from its barrel and all adjoining parts.

`tuted for the pipe A, the gas beingconveyed supporter U. One or more set-screws V may l IOO through the recesses Y in the holder. Then by a circular movement of about one-third of va circle an engagement similar to a bayonetslot lock will be eected' between the ledges YV on the gallery and the ledges Y on the globe-holder and the globe permanently held in proper position.

In order to prevent the possibility of the globe moving backwardly, so as to unlock and fall, I provide stops ab (see Fig. 2) on the globe-holder, which engage with the ends of the ledges Won the gallery or support. The stop a is a small one having relatively slight downward extension, so that it engages with the end of the appropriate ledge only when the parts are in place, there being sufficient looseness in the joint to permit this small projection passing above the ledge during the adjustment of the globe upon the gallery.

c is a tube for supplying the pilot-burner, which is furnished with gas in a mannerl now well understood through a passage-way f, cut in the periphery of the plug of the cock.

d is the cross-bar, which actuates the gascock P by means of the chains e e.

It will be observed that'the means employed whereby the globe-holder is attached to the gallery or support are exceedingly simple and reliable and that the adjustment may be made without danger of jarring, shaking, or striking the mantles. There is no tight tat any part of the structure. The ledges on the gallery or support pass freely through the recesses in the globe-holder, and then by a simple partial rotation of the latter the engagement is effectively and securely made, as stated. Itwillalso be noted that the gascock and all coacting parts are below the burners. Therefore the actuating-chains and the cross-bar and pilot-tube connection are removed from the mantles, so their movelnents do not tend to break them, and also that these parts are below the globe, and consequently are in the freely-circulating open air, free from any confinement, thereby relieved of the great heat generated by the burners.

It will be obvious to those who are familiar with this art that modifications may be made in the details of construction without departing from the essentials of the invention.

Having described my invention, I claim- 1. In an incandescent gas-lamp the combination of a globe-holder provided with a horizontal flange having recesses and ledges between the recesses, a gallery connected with the burner having projections adapted to pass through the recesses in the flange of the holder to engage with the ledges on it and provided also with air-holes in its bottom and a gas-cock and operating devices therefor located in the freely-circulating air below the burners and below the globe-support.

2. In an incandescent gas-lamp the combination of a globe-holder provided with an inwardly-extending horizontal flange having a centrally-located opening large enough to permit the easy passage therethrough of the operating devices for the gas-cock, the inner edge of said flange having recesses and ledges between the recesses, a gallery connected with the burner having a perforated bottom for the free passage of the air and having also projections adapted to pass through the recesses in the flange of the globe-holder and to engage with the ledges thereof and a gascock and operating devices therefor located below the globe-support.

3. In an incandescent gas-lamp the combination of a globe-holder provided with an inwardly-extending horizontal flange, said flange having a central opening large enough to permit the devices which operate the gascock to pass freely through it, recesses and ledges between the recesses on the inner edge of said flange, a gallery connected with the burner and having projections adapted to pass through the recesses in the flange ofthe holder to engage with the ledges thereof, locking devices engaging with inside ledges and projections which prevent vaccidental disengagement of the said parts and a gascock and operating devices therefor located below the burners.

Signed at New York, in the county of New York and State of New York, this 2d day of October, 1901.

FRANK M. BROOKS.

Witnesses:

PHILLIPS ABBOTT, EDGAR R. MEAD. 

